Forums: Skydiving: Incidents:
Landing Incident Skydive Sacramento, Lincoln, Ca May 10, 2014

 


Feeblemind  (D 28621)

May 10, 2014, 3:27 PM
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Landing Incident Skydive Sacramento, Lincoln, Ca May 10, 2014 Can't Post

Here are the facts:

Experienced video flyer, 1500+ and very current
Canopy Safire2 189 loaded @ 1.32
Reserve in date
Gear inspected by very experience rigger, gear was without issue.
Conditions: Clear with winds from the North West at 12-15, gusting to 18 knots.
Approx. 1300 hrs
Landing area size: approx 27 acres

Individual was on final approach for landing, the jumper appears to have flown into the wind shadow of a barn (30 Ft. high)approximately 100-125 yards to the north west. The left side of the jumpers canopy collapsed resulting in a 15-25 foot rapid vertical decent. Jumper was unconscious and tended to immediately by staff as well as an off duty paramedic . Current injuries are unknown at this time, jumper was flown to a local trauma center for further treatment.

Jumpers name will not be released at this time as we are contacting family.


(This post was edited by Feeblemind on May 10, 2014, 7:17 PM)
Attachments: May 10.jpg (139 KB)


lcubed2004  (D License)

May 10, 2014, 9:41 PM
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Re: [Feeblemind] Landing Incident Skydive Sacramento, Lincoln, Ca May 10, 2014 [In reply to] Can't Post

Injuries: Broken wrist, couple of broken ribs, cracks in pelvis... expected to make full recovery.




JeffCa  (C License)

May 11, 2014, 4:54 AM
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Re: [lcubed2004] Landing Incident Skydive Sacramento, Lincoln, Ca May 10, 2014 [In reply to] Can't Post

lcubed2004 wrote:
expected to make full recovery.

Best incidents news I've seen on here in a while!


fcajump  (D 15598)

May 12, 2014, 8:15 AM
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Re: [JeffCa] Landing Incident Skydive Sacramento, Lincoln, Ca May 10, 2014 [In reply to] Can't Post

Bad that it happened,
Good prognosis.

Thanks for a clean/factual writeup.


yoink

May 12, 2014, 9:04 AM
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Re: [Feeblemind] Landing Incident Skydive Sacramento, Lincoln, Ca May 10, 2014 [In reply to] Can't Post

Nice report. Great to hear they'll make a full recovery!

Is landing in the wind shadow something that happens regularly, or was the jumper in an unusual part of the DZ? Is it communicated as a hazard to jumpers?

One of the things I've learnt over the years is that turbulence happens MUCH further away from objects than most people realise.


Di0  (C 42151)

May 12, 2014, 10:34 AM
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Re: [yoink] Landing Incident Skydive Sacramento, Lincoln, Ca May 10, 2014 [In reply to] Can't Post

 
Great News about the recovery.
I wish him a quick one, too!
Smile


yoink wrote:
One of the things I've learnt over the years is that turbulence happens MUCH further away from objects than most people realise.

Somehow related, although it might not be what happened, but maybe good to think about this: also, correct me if I'm wrong, please, most people tend to think as turbulence being "horizontal" from obstacles and don't worry too much about what happens "above" objects. In other word, the wind shadow is not only at the same height of the obstacles but also extends above them, kinda like a "box" no-flight zone.

From my personal experience, when the winds are nasty, turbulence forms also on top of tree lines etc. I was once flying low-not-so-low on top of tree lines because the wind blowing from there would have set me right on the peas.
The second I approached closer to the tree line, before being exactly on top of them, I had a partial canopy collapse, the right-most cell deflated completely, the one next to it only partially, I swung like a pendulum, it spun me around, luckily I was at above 100 ft, closer to 200 ft, the canopy re-inflated right away, so some rear risers were enough to get everything straight for an otherwise uneventful landing. A couple of people on the ground held their breath.

My mistake.
Lesson Learned (or rather, reinforced): away from "thick" obstacles means both horizontally and vertically, even if you know you have enough altitude to fly above them and clear them, turbulence might "suck you" when you're on top of them.


lyosha  (A License)

May 12, 2014, 11:35 AM
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Re: [Di0] Landing Incident Skydive Sacramento, Lincoln, Ca May 10, 2014 [In reply to] Can't Post

Di0 wrote:
most people tend to think as turbulence being "horizontal" from obstacles and don't worry too much about what happens "above" objects.

10x downwind from object, 1x upwind and 2x above object is turbulence areas.

Don't fly near objects if you can avoid it.


Di0  (C 42151)

May 12, 2014, 11:44 AM
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Re: [lyosha] Landing Incident Skydive Sacramento, Lincoln, Ca May 10, 2014 [In reply to] Can't Post

lyosha wrote:
Di0 wrote:
most people tend to think as turbulence being "horizontal" from obstacles and don't worry too much about what happens "above" objects.

10x downwind from object, 1x upwind and 2x above object is turbulence areas.

Don't fly near objects if you can avoid it.

Yup.
Good rule of thumb.

From my personal experience, I have the "feeling" that most people know the 10x downwind and somehow are aware of it and observe it (maybe not 10x, but most people know better than flying downwind from objects), while they kind of ignore or are unaware of the 2x above and 1x upwind. I don't know, it seems to me that this two directions are often overlooked and only the "downwind" one is referred to, when talking about turbulence.


dzkid39  (C 37353)

May 12, 2014, 10:01 PM
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Re: [Di0] Landing Incident Skydive Sacramento, Lincoln, Ca May 10, 2014 [In reply to] Can't Post

I want to start by saying I'm not the most reliable source on this because this isn't my home DZ and I didn't get to jump due to the winds, but witnessed the incident. I was visiting skydive sac and was getting a DZ briefing when it happened. From my point of view there wasn't any obstacles below him. As already stated it is a fairly large lz and he was over open field during the time of the incident. I think this an good topic to discuss though. Maybe we should start a new thread safety and training on this?


format  (B 15348)

May 13, 2014, 1:04 AM
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Re: [Di0] Landing Incident Skydive Sacramento, Lincoln, Ca May 10, 2014 [In reply to] Can't Post

Di0 wrote:
lyosha wrote:
Di0 wrote:
most people tend to think as turbulence being "horizontal" from obstacles and don't worry too much about what happens "above" objects.

10x downwind from object, 1x upwind and 2x above object is turbulence areas.

Don't fly near objects if you can avoid it.

Yup.
Good rule of thumb.

From my personal experience, I have the "feeling" that most people know the 10x downwind and somehow are aware of it and observe it (maybe not 10x, but most people know better than flying downwind from objects), while they kind of ignore or are unaware of the 2x above and 1x upwind. I don't know, it seems to me that this two directions are often overlooked and only the "downwind" one is referred to, when talking about turbulence.
Shouldn't there be sides included then?


Feeblemind  (D 28621)

May 13, 2014, 8:01 AM
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Re: [yoink] Landing Incident Skydive Sacramento, Lincoln, Ca May 10, 2014 [In reply to] Can't Post

yoink wrote:
Nice report. Great to hear they'll make a full recovery!

Is landing in the wind shadow something that happens regularly, or was the jumper in an unusual part of the DZ? Is it communicated as a hazard to jumpers?

One of the things I've learnt over the years is that turbulence happens MUCH further away from objects than most people realise.

Thanks for asking this, The jumper was long on his approach. Normally vidiots land in the southern portion of the field near the peas. I have not spoken to him on why he was so long, but it did result in him landing portion of the LZ not often used (long walk).

Airport briefings and landing area briefs are conducted. This jumper has been here for several years and knew the area well.


Di0  (C 42151)

May 14, 2014, 10:29 AM
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Re: [dzkid39] Landing Incident Skydive Sacramento, Lincoln, Ca May 10, 2014 [In reply to] Can't Post

dzkid39 wrote:
I want to start by saying I'm not the most reliable source on this because this isn't my home DZ and I didn't get to jump due to the winds, but witnessed the incident. I was visiting skydive sac and was getting a DZ briefing when it happened. From my point of view there wasn't any obstacles below him. As already stated it is a fairly large lz and he was over open field during the time of the incident. I think this an good topic to discuss though. Maybe we should start a new thread safety and training on this?

I agree, I didn't mean to "hijack" the thread and I felt it might not have been the specific issue, but on the other hand to me the whole point of the incidents forum (to me, at least) is to spawn interesting discussions that might prevent similar accidents in the future.

I'll open a topic soon.



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